Design concept for a novel long span composite floor system

F. R. Miller, C. G. Bailey

Research output: Contribution to journalArticlepeer-review


By pre-stressing a newly developed steel deck, prior to delivery to site, clear composite floor spans in excess of 11 m can be readily achieved without the need for temporary propping. A prototype of the composite floor has been successfully tested and the results presented previously. This paper explains the basic engineering mechanics of the new system together with design equations. The three basic stages of pre-stressing the steel deck, pouring the wet concrete during the construction stage, to bring about reactive post-stress action, and the behaviour of the final composite section are explained. The design equations are compared against the test results from the prototype showing that the floor's behaviour can be adequately predicted. The advantages and disadvantages of the new floor system are also discussed.
Original languageEnglish
Pages (from-to)38-47
Number of pages9
JournalStructural Engineer
Issue number21
Publication statusPublished - 6 Nov 2007


  • Comparing
  • Composite construction
  • Concrete
  • Design prestressed steel
  • Floors
  • Hollow core floors
  • Long span
  • Tekdek system


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